Where can i actually download some wizard rock songs for free?

hi, if you haven't heard abt wizard rock its a genre(acc. to mtv) of music inspired by harry potter(like led zeppelin by LotR). There are some really good bands and artists around at this moment and they've got myspace blogs sites and everything but i still cannot find any link to download the songs for free either there or anywhere else...maybe i'm just too stupid but i would still very much like to hear the those songs, especially "voldemort can't stop the rock" by Harry and the Potters.